Set version to 3.4.0-SNAPSHOT

Author: lupuuss

gradle.properties

@@ -7,5 +7,5 @@ org.jetbrains.dokka.experimental.gradle.pluginMode=V2Enabled
 org.jetbrains.dokka.experimental.gradle.pluginMode.noWarn=true
 org.gradle.parallel=true
 kotlin.js.stdlib.dom.api.included=false
-version=3.3.0
+version=3.4.0-SNAPSHOT